Sambo is a Russian martial art and combat sport. The word “SAMBO” is an acronym for SAMooborona Bez Oruzhiya, which literally translates as “self-defense without weapons”. Sambo is relatively modern since its development began in the early 1920s by the Soviet Red Army to improve their hand to hand combat abilities. Intended to be a merger of the most effective techniques of other martial arts, Sambo has roots in Japanese judo plus traditional folk styles of wrestling such as: Armenian Kokh, Georgian Chidaoba,Moldavian Trînt?, Tatar Körä?, Uzbek Kurash, Mongolian Khapsagay and Azerbaijani Gulesh.
The pioneers of Sambo were Viktor Spiridonov and Vasili Oshchepkov. Oshchepkov died in prison as a result of thepolitical purges of 1937 after accusations of being a Japanese spy. Oshchepkov spent much of his life living in Japan and training judo under its founder Kano Jigoro. The two men independently developed two different styles, which eventually cross-pollinated and became what is known as Sambo. Compared to Oshchepkov’s judo based system, then called “Freestyle Wrestling”, Spiridonov’s style was softer and less strength dependent. This was in large part due to Spiridonov’s injuries sustained during World War I.
Reference: Wikipedia Sombo